Prefabricated wall frame for construction and ceiling frame using same

ABSTRACT

Provided is a structure of a prefabricated wall frame for construction and a ceiling frame. The prefabricated wall frame for construction includes a wall main frame, interior and exterior panels, and panel spacing bars. The wall main frame has a certain length in a longitudinal direction and includes square pipe fixing plates facing each other, lattice trusses separated at a certain distance and coupled between the square pipe fixing plates, panel fixing pins coupled in a longitudinal direction on the outer side of the square pipe fixing plates, coupling members coupling the panel fixing pins to the square pipe fixing plates, truss fixing bars coupling the lattice trusses in a traverse direction, and plumbing pipes coupling the lattice trusses and the truss fixing bars in a longitudinal direction. The interior and exterior panels and panel spacing bars are attached on the outer side of the wall main frame.

BACKGROUND OF THE INVENTION

The present invention disclosed herein relates to a prefabricated wall frame for construction and a ceiling frame using the same, and more particularly, to a prefabricated wall frame for construction and a ceiling frame using the same, by which an average person, not necessarily a person skilled in the art, can build such constructions as a house safely and quickly by mere assembling of subsidiary materials cut according to a construction plan.

Generally, when an ordinary person who is not skilled in the art builds his/her house, there are limitations. He/she needs to purchase a great number of apparatuses and also needs to recruit professional workers of various fields for their participation. Therefore, it is costly and time-consuming for him/her to build a house.

FIGS. 9A to 9C are perspective views illustrating a wall structure of a typical construction disclosed in Reference 1 and Reference 2.

The structure of a wall built in a typical house, as shown in FIG. 9A, has an accouplement 2 formed horizontally and fitted in holes drilled in the middle of pillar 1 to connect pillars 1 consisting of the basic framework to form a wall frame. Then red clay is applied to the inside and outside of the accouplement 2 at a uniform thickness to form a wall. When a wall is built likewise, the house framework is not sturdy and the house is occasionally toppled down by a typhoon or an earthquake.

Also, in a wall structure shown in FIG. 9B, partition dividers 9 are interposed at a certain interval in the space formed by outer side walls 8 separated at an interval to partition the space inside, and square-shape through holes 8A are formed on the outer side wall 8.

Since it is not easy to insert dirt material in the partitioned wall space and the inserted dirt material does not link through the entire wall but discontinues, such house wall structure has a limitation in that it is not strong in structure.

There is other limitation in that the inserted dirt material oozes out through the through hole 8A on the outer side wall and appears bad-looking.

A mud-plastered house wall shown in FIG. 9C has a structure in which pillars 4 are interposed at an interval in the space between outer side panels 6 evenly spaced vertically.

However, such structures have a safety limitation in that filler between pillars 4 discontinues and does not link through the entire wall, thus weakening the strength and also an environmental limitation in that wind and noise are flown in through the gaps formed due to the block type formation.

[Doc. 1] FIG. 3 in Korean Patent Application Publication No. 10-2006-0134839 (Title: MUD-PLASTERED HOUSE)

[Doc. 2] FIG. 2 in Korean Patent Application Publication No. 10-2007-0094595 (Title: STEEL PLATE FRAME FOR CONSTRUCTING CLAY HOUSE AND CONSTRUCTION METHOD USING THE SAME)

SUMMARY OF THE INVENTION

The present invention provides a prefabricated wall frame for construction and a ceiling frame using the same, by which any average person, not a person skilled in the art, can form a wall merely by assembling subsidiary materials for construction.

The present invention also provides a structure of a prefabricated wall frame for construction and a ceiling frame using the structure, in which a filler filled inside the wall whose framework is formed by fabrication does not disintegrate but link in a single chunk like a cement wall.

The present invention also provides a structure of a prefabricated wall frame for construction and a ceiling frame using the structure, which reduces time and expense due to no additional finish work required for a construction of a building merely by fitting in interior and exterior panels on the outer side of a formed wall.

Embodiments of the present invention provide prefabricated wall frames for construction, including: a wall main frame having a certain length in a longitudinal direction; interior and exterior panels attached to the outer side of the wall main frame; and panel spacing bars attached to the outer side of the wall main frame, wherein the wall main frame is formed to include square pipe fixing plates facing each other; lattice trusses separated at a certain distance and coupled between the square pipe fixing plates; panel fixing pins coupled in a longitudinal direction on the outer side of the square pipe fixing plates; coupling members coupling the panel fixing pins to the square pipe fixing plates; truss fixing bars coupling the lattice trusses in a traverse direction; and plumbing pipes coupling the lattice trusses and the truss fixing bars in a longitudinal direction.

In some embodiments, the wall main frame may be formed to include square pipe fixing plates which face each other; lattice trusses separated at a certain distance and coupled between the square pipe fixing plates; panel fixing pins coupled in a longitudinal direction on the outer side of the square pipe fixing plates; coupling members coupling the panel fixing pins to the square pipe fixing plates; truss fixing bars coupling the trusses in a traverse direction; and plumbing pipes coupling the lattice trusses and the truss fixing bars in a longitudinal direction.

In other embodiments, the lattice truss may be configured to have insertion holes for plumbing pipes in a longitudinal direction and the plumbing pipe formed of a metal may have a common utility part disposed inside to receive wires

In other embodiments of the present invention, prefabricated ceiling frames for construction include a lower curved plate having a certain curvature for a ceiling; an upper curved plate for a ceiling disposed over the lower curved plate for a ceiling, curved with a curvature corresponding to the curvature of the lower curved plate for a ceiling; a lattice truss formed between the upper and lower curved plates for a ceiling; panel fixing pins coupled along the length on the outer sides of the upper curved plate for a ceiling and the lower curved plate for a ceiling; coupling members coupling the panel fixing pins and the lattice truss each to the upper curved plate and the lower curved plate for a ceiling, truss fixing bars connecting the lattice trusses in a traverse direction; plumbing pipes connecting the lattice and the truss fixing bars in a longitudinal direction; exterior panels and panel spacing bars coupled onto the outer side surfaces of the lower curved plate and the upper curved plate for a ceiling using the panel fixing pins.

In some embodiments, the lower curved plate for a ceiling may include a lower curved plate with a certain width; nut members formed at a certain interval along the front and rear edges in a length direction on the top surface of the lower curved plate; lower curved plate supports coupled on the top of the nut members to maintain the curvature of the lower curved plate; and bolts connecting the lower curved plate support to the nut members.

In other embodiments, the upper curved plate for a ceiling may include an upper curved plate with a certain width; nut members formed at a certain interval along the front and rear edges in a length direction on the under surface of the upper curved plate; upper curved plate supports coupled under the nut members to maintain the curvature of the upper curved plate; and bolts connecting the upper curved plate support to the nut members.

In still other embodiments, the plumbing pipe may be configured to have a curved structure with the same curvature as the curvature of the lower curved plate and the upper curved plate.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are included to provide a further understanding of the present invention, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present invention and, together with the description, serve to explain principles of the present invention. In the drawings:

FIG. 1 is a view illustrating all component parts required for a structure of a prefabricated wall frame for construction and a ceiling frame using the structure according to an embodiment of the present invention;

FIG. 2 is a perspective view illustrating a wall main frame according to an embodiment of the present invention;

FIG. 3 is a view illustrating truss fixing bars coupled to plumbing pipes according to an embodiment of the present invention;

FIG. 4 is a perspective view illustrating truss fixing bars and plumbing pipes combined to lattice trusses according to an embodiment of the present invention;

FIG. 5 is a perspective view illustrating interior/exterior panels attached on the outer side of a wall main frame according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view of FIG. 5;

FIG. 7A is a perspective view illustrating a prefabricated ceiling frame for construction according to an embodiment of the present invention;

FIG. 7B is a view illustrating the structures of a lower curved plate for a ceiling and an upper curved plate for a ceiling as parts of the configuration shown in FIG. 7A;

FIGS. 8A and 8B are cross-sectional views along the lines, A-A and B-B as shown in FIG. 7A; and

FIGS. 9A to 9C are prospective views illustrating example structures of a wall for construction of a typical mud-plastered house.

Reference numerals set forth in the drawings includes reference to the following elements as further discussed below:

 10: square pipe fixing plate  11: coupling hole  30: lattice truss  31: inclination part  33: coupling part  33a: coupling hole  35: plumbing pipe insertion hole  40: plumbing pipe  45: plumbing pipe connection fitting member 50: panel fixing pin  51: lower coupling part  53: upper wing part  55: fitting protrusion  60: coupling member  61: bolt  63: nut  70: interior/exterior panel  80: panel spacing bar  90: truss fixing bar 100: wall main frame 110: lower curved plate for ceiling 111: lower curved plate 113: coupling member (nut) 115: coupling hole 120: coupling member (bolt) 130: lower curved plate support 131: coupling hole 150: lower curved plate assembly for ceiling 160: upper curved plate for ceiling 161: upper curved plate 163: second coupling member (nut) 165: coupling hole 170: upper curved plate support 180: upper curved plate assembly for ceiling 200: ceiling frame

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

Preferred embodiments of the present invention will be described below in more detail with reference to the accompanying drawings. The present invention may, however, be embodied in different forms and should not be constructed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

Hereinafter, a prefabricated wall frame for construction and a ceiling frame using the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a view illustrating a structure of all the component parts required for a structure of a prefabricated wall frame for construction and a ceiling frame formed by use of the structure according to an embodiment of the present invention, FIG. 2 is a perspective view illustrating the wall main frame according to an embodiment of the present invention, and FIG. 3 is a view illustrating truss fixing bars and plumbing pipes coupled to the wall main frame according to an embodiment of the present invention.

A structure of a prefabricated wall frame for construction according to an embodiment of the present invention may enable a construction may enable a construction of a building (house) by using and merely assembling a series of subsidiary materials for construction as shown in FIG. 1. That is, a construction may be easily built by assembling a wall frame forming the construction and a ceiling frame coupled at the top of the wall frame by use of bolts and nuts that are coupling members.

FIGS. 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H, 1I, and 1J illustrate a square pipe fixing plate 10, a lattice truss 30, a panel fixing pin 50, coupling members 60, an interior/exterior panel, a panel spacing bar 80, a plumbing pipe 40 and a plumbing pipe connection fitting member 45, a truss fixing bar 90, a lower curved plate for a ceiling 110 and a lower curved plate support 130, and an upper curved ceiling plate 160 and an upper curved plate support 170, respectively.

In an embodiment of the present invention, a wall frame and a ceiling frame may be formed by assembling the component subsidiary materials shown in FIG. 1.

Among the component subsidiary materials, a plumbing pipe 40 shown in FIG. 1G may be formed of a metal to have a space inside for an electric circuit wiring to be inserted, and formed of a metal with a sufficient strength to serve to support the structure of a wall frame.

Also as shown in the drawings, for an easy wiring of electric lines accommodated therein, a plumbing pipe 40 is cut at an appropriate location and fastened with a T-shaped plumbing pipe connection fitting member 45, where electric lines may be separated.

Also, the lower curved plate for a ceiling 110 as shown in FIG. 1I, may have a row of nut members 113 formed on top and a lower curved plate support 130 may be coupled onto the nut members 113.

The nut members 113 may be formed along the front and rear edges on the lower curved plate 111 at a certain interval in a length direction of the lower curved plate 111.

Also, the lower curved support 130 to be coupled onto the top of the nut members 113 may also have coupling holes 131 formed in the length of the support. In this case, the lower curved plate for a ceiling 110 may be formed in curved shape as shown in FIGS. 7A and 7B that are described later, for which the interval between the nut members 113 formed on the lower curved plate 111 and the interval between the coupling holes 131 formed on the lower curved support 130 may be different. For example, in case that the curved plate is curved such that the middle portion is concave and the both end portions are bent down as shown in FIGS. 7A and 7B, the interval between the coupling holes 131 formed on the lower curved support 130 may be formed larger than the interval between the nut members 113 formed on the lower curved plate 111 (Reverse is true with the case of an upper curved plate).

Accordingly, the lower curved plate 111 initially bent with a certain curvature may have the corresponding lower curved support 130 fit to the plate, and the bolts 120 that are coupling members may be coupled through the coupling holes 131 formed on the lower curved support 130. Then the lower curved plate for a ceiling 110 may maintain the curved shape.

Since the upper curved plate for a ceiling 150 may be formed to be curved in the same method as the lower curved plate 110 is as described above, the description hereof will be omitted.

A fabricated wall main frame 100 shown in FIG. 2 may include two square pipe fixing plates 10, a lattice truss 30 formed between the square pipe fixing plates 10, panel fixing pins 50 coupled in a longitudinal direction on the outer side of the square pipe fixing plates, and coupling members 60 coupling the panel fixing pins 50 to the square pipe fixing plate 10.

FIG. 5 is a perspective view illustrating interior/exterior panels attached to the outer side of a wall main frame according to an embodiment of the present invention, and FIG. 6 is a cross-sectional view of FIG. 5.

As shown in the above FIGS., interior/exterior panels 70 and panel spacing bars 80 may be attached to the outer sides of a prefabricated main frame 100 and the interior/exterior panels 70 and the panel spacing bars 80 are attached by use of the panel fixing pins 50.

The interior/exterior panels 70 may be configured to be fitted between mutually adjacent panel fixing pins 50 disposed in a longitudinal direction on the prefabricated wall main frames 100 arranged at an interval in a traverse direction.

In this case, a prefabricated wall main frames 100 may be arranged at an interval of about 1.5 meter to form the prefabricated wall according to an embodiment of the present invention.

Panel spacing bars 80 according to an embodiment of the present invention may be seated on the upper part of panel fixing pins 50 exposed with interior/exterior panels 70 formed to be disposed to be on the same plane as the interior/exterior panels 70.

Panel spacing bars 80 according to an embodiment of the present invention may have a series of coupling means disposed so as to be coupled when a certain pressing force is applied on the upper side. For example, as shown in FIG. 5, fitting protrusions 55 may be formed on the upper sides of wing parts 53 of a panel fixing pin 50, and insertion grooves 81 may be formed on the lower part surface of a panel spacing bar 80 such that the pin and the bar may be coupled easily together by mutually binding force.

In the configuration according to an embodiment of the present invention, a square pipe fixing plate 10 may have a certain length in a longitudinal direction and may be formed of steel frame of U-shape on the cross section such that the strength of the plate is increased sufficiently to sustain the force imposed in a longitudinal direction at the time of construction.

Through holes may be formed along the length on the square pipe fixing plate 10 that is provided as a coupling space when a panel fixing pin 50 and a lattice truss 30 are coupled. As shown in the above Figures, even though the number of through holes 11 formed on a square pipe fixing plate 10 is limited to 2 for stability of the coupling, a plurality of more than 2 of through holes may also be allowed to be formed.

Also, a lattice truss 30 according to an embodiment of the present invention, as shown in FIGS. 1 to 4, is formed in a zigzag pattern in a longitudinal direction and distinguished into an inclination part 31 and a coupling part 33.

A plumbing pipe insertion hole 35 is formed on the inclination part 31, and a plurality of coupling holes 33A are formed on the coupling part 33. Through the coupling hole 33A, a square pipe fixing plate 10 and a panel fixing pin 50 are coupled by a coupling member 60.

That is, the panel fixing pin coupling member 60 may fasten a panel fixing pin 50 on the outer side surface of a square pipe fixing plate 10 and may fasten a lattice truss 30 at the same time.

A panel fixing pin 50 according to an embodiment of the present invention, as shown in FIGS. 1 and 2, is configured to be approximately letter U shape on the cross section and have the upper side-end portions extended for a certain length to both sides. Accordingly, interior/exterior panels may be inserted between two panel fixing pins 50 disposed adjacently in a longitudinal direction. The fastened interior/exterior panels 70 may allow the outer surface of a prefabricated wall to appear beautiful.

The interior/exterior panels 70 according to an embodiment of the present invention may be configured to have a panel spacing bar 80 inserted in between. That is, a panel spacing bars 80 may be configured to be fastened by a mere pressing at an upper side of panel fixing pins 50, for which coupling means may be disposed on panel spacing bars 80 and panel fixing pins 50.

For example, a panel fixing pin 50 as shown in FIG. 2, may have a fitting protrusion 55 formed upward on the upper sides of wing parts 53 extended from upper side-end portions to both sides. A panel spacing bar 80 coupled correspondingly to the pin may have insertion grooves 81 formed on the surface of the lower end portion thereof as shown in FIG. 4.

Means to configure a coupling between the panel spacing bar 8 and the panel fixing pin 50 is not limited to the configuration described above but may be subject to any modification.

In order to form a fabricated wall frame structure according to an embodiment of the present invention, as shown in FIGS. 3 and 4, truss fixing bars 90 and plumbing pipes 40 may be disposed together with prefabricated wall main frames 100 arranged at a certain interval in a traverse direction. That is, in a state of prefabricated wall main frames 100 of a certain length in a longitudinal direction being arranged at an interval, truss fixing bars 90 may be disposed in a traverse direction to cross lattice trusses 30 and coupled thereof using plumbing pipe insertion holes 35 formed on each lattice truss 30. In this case, through holes 91 may be formed also on the truss fixing bars 90 corresponding to the plumbing pipe insertion holes 35. The interval distance of the through holes 91 is the same as the distance of wall main frames 100 disposed in a traverse direction.

On the other hand, the truss bars 90 and the lattice trusses 30 according to an embodiment of the present invention may be coupled by plumbing pipes 40 disposed in a longitudinal direction. That is, the coupling is accomplished when plumbing pipes 40 are inserted through plumbing pipe insertion holes 35 formed on the lattice trusses 30.

A prefabricated wall is completed when a filler (not shown) is filled in the inside space of a prefabricated wall frame for construction formed by use of prefabricated wall main frames 100, exterior panels 70 and panel spacing bars 80.

The filler is not illustrated herein. The filler may be formed of clay, rice straw, grass, sand, chaff and/or tree leaves

Also, a builder may choose a material arbitrarily for a filler other than the materials mention above.

When the filler is inserted inside a prefabricated wall frame according to an embodiment of the present invention, the filler is inserted into the inside of a square pipe fixing plate 10 that serves as a pillar of the wall. That is, there is typically a limitation in that a typical wall is not stable in structure since the filler inserted inside the wall is interrupted by pillars from being completely linked. The wall of the present invention, however, is greatly improved in its sturdiness than the typical walls since the filler is inserted into the inside of the wall frame.

That is, when a filler is filled in a prefabricated wall frame 200 according to an embodiment of the present invention, since partitions of each pillar are not separated like a concrete structure the wall has excellent effects of better structural stability, better sound and thermal insulation.

FIG. 7A is a perspective view illustrating a prefabricated ceiling frame for construction according to an embodiment of the present invention, FIG. 7B is a view illustrating the structures of a lower curved plate for a ceiling and an upper curved plate for a ceiling as parts of the configuration shown in FIG. 7A,

Also, FIGS. 8A and 8B are cross-sectional views along the lines, A-A and B-B as shown in FIG. 7A

As shown in the above figures, a prefabricated ceiling frame 200 that forms a ceiling of a construction may include a lower curved plate assembly 150 for a ceiling having a certain curvature, an upper curved plate assembly 180 for a ceiling, a lattice truss 30 formed between the upper curved plate assembly 180 for a ceiling and the lower curved plate assembly 150 for a ceiling, panel fixing pins 50 coupled along the length on the outer side surfaces of the lower curved plate assembly 150 and the upper curved plate assembly 180 for a ceiling, coupling members 60 coupling the panel fixing pins 50 and the lattice trusses 30 to the upper curved plate and the lower curved plate each, truss fixing bars 90 connecting the lattice trusses 30 in a traverse direction, plumbing pipes 40 connecting the lattice trusses 30 and the truss fixing bars 90 in a longitudinal direction, interior/exterior panels 70, and panel spacing bars 80 coupled onto the outer side surfaces of the lower curved plate 110 and the upper curved plate 160 for a ceiling using the panel fixing pins 50.

In the description of the structure of a prefabricated frame for a ceiling according to an embodiment of the present invention, identical reference numerals will be used for the same component members as used in the description above of the structure of a prefabricated wall frame.

Also, in the description of the structure of a prefabricated frame for a ceiling, that is, a lower curved plate assembly 150 and an upper curved plate assembly 180 for a ceiling and of a curved shape, even though a lattice truss 30 correspondingly coupled to the component members, a lower curved plate 110 and an upper curved plate 160 for a ceiling may be of a curved shape the lattice truss 30 will be referred to as the same numeral as a linear lattice truss 30 used in a wall frame.

In the above configuration, a lower curved plate 110 for a ceiling as shown in FIG. 7A, may include a lower curved plate 111 having a certain width, nut members 113 formed along the front and rear edges on the top surface of the lower curved plate 111 at a certain interval in a length direction, a lower curved plate support 130 coupled to the upper part of the nut members 113 and maintaining the curvature of the lower curved plate 111, and bolts 120 coupling the lower curved plate support 130 to the nut members 113.

Also, the upper curved plate 180 for a ceiling according to an embodiment of the present invention as shown in FIG. 7B, may include an upper curved plate 161 having a certain width, nut members 163 formed along the front and rear edges on the under surface of the upper curved plate 161 at a certain interval in a length direction, an upper curved plate support 170 coupled to the lower part of the nut members 163 and maintaining the curvature of the upper curved plate 161, and bolts 120 coupling the upper curved plate support 170 to the nut members 163.

On the other hand, the plumbing pipe 40 used in the ceiling frame according to an embodiment of the present invention, may be formed to be a curved plumbing pipe having the same curvature as the lower curved plate 111 and the upper curved plate 161. The plumbing pipe of a curved shape is formed from a linear plumbing pipe 40 used in a wall frame to be curved with a certain curvature. Since the formation is implementable by use of a typical skill, description hereof will be omitted.

A construction of a ceiling wall is completed by filling with a filler inside the prefabricated ceiling frame 200 according to an embodiment of the present invention. The same material inserted for a filler in the prefabricated wall may be used as the filler. For example, dirt, straw, grass, sand, chaff and tree leaves are included among usable materials. The filler material may vary according to a builder's choice.

As described in the above according to an embodiment of the present invention, a builder may build what a user wants to build with ease and less cost by assembling component members such as a prefabricated wall frame and a ceiling frame, and a filler therein.

According to an embodiment of the present invention, an average person can build a construction (house) easily for himself/herself without professional construction skill because the embodiment requires simple assembling of prefabricated subsidiary materials.

When the prefabricated wall frame is filled with filler, filler may form a lump of wall structure like a cement structure. Accordingly, the prefabricated wall frame has excellent effects in terms of structural stability and sound and thermal insulation.

Also, insertion holes for a plumbing pipe may be formed in a longitudinal direction on a lattice truss. Plumbing pipes through the insertion holes may be configured to be coupled to truss fixing bars to prevent distortion or correct tilting of a wall, thereby achieving structural stability.

All parts of the framework may be connected to each other, showing effects of dispersing and alleviating an applied force even upon application of an external impact from a typhoon or an earthquake.

In addition, various designs on the wall can be created by attaching interior/exterior panels, and various interior effects can be produced without interior wall paper finishing.

The above-disclosed subject matter is to be considered illustrative, and not restrictive, and the appended claims are intended to cover all such modifications, enhancements, and other embodiments, which fall within the true spirit and scope of the present invention. Thus, to the maximum extent allowed by law, the scope of the present invention is to be determined by the broadest permissible interpretation of the following claims and their equivalents, and shall not be restricted or limited by the foregoing detailed description. 

What is claimed is:
 1. A prefabricated wall frame for construction, comprising: a wall main frame having a certain length in a longitudinal direction; interior and exterior panels attached to the outer side of the wall main frame; and panel spacing bars attached to the outer side of the wall main frame, wherein the wall main frame comprises: square pipe fixing plates facing each other; lattice trusses separated at a certain distance and coupled between the square pipe fixing plates; panel fixing pins coupled in a longitudinal direction on the outer side of the square pipe fixing plates; coupling members coupling the panel fixing pins to the square pipe fixing plates; truss fixing bars coupling the lattice trusses in a traverse direction; and plumbing pipes coupling the lattice trusses and the truss fixing bars in a longitudinal direction.
 2. The prefabricated wall frame for construction of claim 1, wherein the lattice truss is configured to have plumbing pipe insertion holes formed in a longitudinal direction
 3. The prefabricated wall frame for construction of claim 1, wherein the plumbing pipe is a metallic pipe comprising a common utility part disposed therein to accommodate wires.
 4. A prefabricated ceiling frame for construction, comprising: a lower curved plate for a ceiling having a certain curvature; an upper curved plate disposed over the lower plate and curved with a curvature corresponding to the curvature of the lower curved plate; a lattice truss formed between the upper and lower curved plates for a ceiling; panel fixing pins coupled along the length on the outer side surfaces of the upper curved plate and the lower curved plate for a ceiling; coupling members coupling the panel fixing pins and the lattice truss to the upper curved plate and the lower curved plate for a ceiling each; truss fixing bars connecting the lattice trusses in a traverse direction; plumbing pipes connecting the lattice and the truss fixing bars in a longitudinal direction; and exterior panels and panel spacing bars coupled onto the outer side surfaces of the lower curved plate and the upper curved plate for a ceiling using the panel fixing pins.
 5. The prefabricated ceiling frame for construction of claim 4, wherein the lower curved plate for a ceiling comprises: a lower curved plate having a certain width; nut members formed at a certain interval along the front and rear edges in a length direction on the top surface of the lower curved plate; lower curved plate supports coupled on the top of the nut members to maintain the curvature of the lower curved plate; and bolts connecting the lower curved plate support to the nut members.
 6. The prefabricated ceiling frame for construction of claim 4, wherein the upper curved plate for a ceiling comprises: an upper curved plate having a certain width; nut members formed at a certain interval along the front and rear edges in a length direction on the under surface of the upper curved plate; upper curved plate supports coupled on the bottom of the nut members to maintain the curvature of the upper curved plate; and bolts connecting the upper curved plate support to the nut members.
 7. The prefabricated ceiling frame for construction of claim 4, wherein the plumbing pipe is configured to be curved with the same curvature as the curvature of the lower curved plate and the upper curved plate. 